S 434-074
(12)
Connect the electrical connector (1) to the bottle pressure switch. ~......................................................... | BOTTLE | ELECTRICAL CONNECTOR | ........................................................... | LEFT BTL A PRESSURE SWITCH | DM228A | ........................................................... | LEFT BTL B PRESSURE SWITCH | DM229A | ........................................................... | RIGHT BTL A PRESSURE SWITCH | DM230A | ........................................................... | RIGHT BTL B PRESSURE SWITCH | DM231A | 2...............................….........................1
S 434-034
(13)
Do the Squib Electrical Connection procedure to connect the
electrical connectors (9) to the bottle squibs. ~......................................................... | BOTTLE | ELECTRICAL CONNECTOR | ........................................................... | LEFT BTL A ENG 1 SQUIB | DM228C | ........................................................... | LEFT BTL A ENG 2 SQUIB | DM228B | ........................................................... | LEFT BTL B ENG 1 SQUIB | DM229C | ........................................................... | LEFT BTL B ENG 2 SQUIB | DM229B | ........................................................... | RIGHT BTL A ENG 3 SQUIB | DM230B | ........................................................... | RIGHT BTL A ENG 4 SQUIB | DM230C | ........................................................... | RIGHT BTL B ENG 3 SQUIB | DM231B | ........................................................... | RIGHT BTL B ENG 4 SQUIB | DM231C | 2...............................….........................1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 094-035
WARNING:_______MAKE SURE YOU REMOVE THE LOCKS CORRECTLY (REF 27-81-00/201). THE FLAPS WILL RETRACT IN 7 SECONDS AND CAN CAUSE INJURY TO PERSONS.
(14)
Remove the safety locks for the leading edge flap (AMM 27-81-00/201).
S 864-037
(15)
Remove DO-NOT-CLOSE tag and close these circuit breakers if it is necessary:
(a) P6 Main Power Distribution Panel
1) 6H1, FIRE EXTINGUISHER ENG 1&3 B
2) 6H2, FIRE EXTINGUISHER ENG 1&3 A
3) 6H3, FIRE EXTINGUISHER ENG 2&4 B
4) 6H4, FIRE EXTINGUISHER ENG 2&4 A
S 864-055
(16)
Supply electrical power (AMM 24-22-00/201).
S 714-056
(17)
Push the TEST 1 switch on the squib test module (P5).
(a)
Make sure the ENG 1, 2, 3 and 4 squib lights come on.
(b)
Do the test for the bottle B squibs by pushing the TEST 2 switch again.
S 714-057
(18) Push and hold the test manual override switch , or turn the ground hex key on the extinguisher bottle pressure switch.
(a) Make sure the BTL A or B (as applicable) DISCH light on the fire control module (P5) comes on.
S 714-058
(19) Release the manual override switch, or turn the hex key back to its usual position.
(a) Make sure the BTL A or B DISCH light goes off.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-21-03
ALL ú ú 05 Page 410 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 014-076
WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP
CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL
MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP
CONTROL LEVER. INJURY TO PERSONS CAN OCCUR.
(20)
Retract the leading edge flaps (AMM 27-81-00/201). S 864-059
(21)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
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